rodv61 wrote:It is probably not worth the effort given the turbo kicks in at 1100rpm and is at full boost at about 1500rpm, so you will always be above the max boost unless you drive around with a hat on.

Do you know how much boost in psi or bar do our 2.5 turbodiesels make?

I know our engine uses a Garrett GT2056V, but maybe could be swapped for another VNT like the GT2256V, GT2260V, GT2359V or GT2556V for more airflow...
more air + more fuel = more power!

Upgrade also the intercooler and pipes, plus correct engine tuning and I bet we could get between 250 - 300bhp easily.

Jorgecar, i would be very sceptical of the longevity of the motor if power was anything above 210-230bhp. Overboosting and overfueling would have detrimental effects in standard form, without any work to strengthen up the internals.

I am investigating the Steinbauer chip upgrade, which gives 154kw & 480nm. Having driven a Navara this week with this mod, i can attest that any more power would be overkill. The percieved turbo lag below 1700rpm, is actually fuel lag or underfuelling and the Steinbauer(as do all chip upgrades) increase fuel flow at low revs, rectifying the problem. The difference has to be experienced to be believed, when you take off no delay, just instant acceleration.

Hopefully i will have my Steinbauer within the next few weeks and i will give an update.

Hi Geoff,
You have a point there, besides the high cost $$$. I was just day dreaming...
I was reading around on VW TDI forums and some bump their 1.9TDIs up to 230-250bhp with turbo swaps and use them as daily drivers, guess they're time-bombs on wheels! ha!

Kitpower also has a piggy back ECU good for 162kW and 508 Nm, which I'm currently considering:

They have their own dedicated raid/rally race program and also prepare vehicles for the general public.
Forum members swear by them, and mention having up to 3 different tuning programs selectable at any time, preloaded into their ECUs by NTDD.